_mobdb_span_joinsel _mobdb_span_sel calc_length_hist_frac get_len_position length_hist_bsearch span_bound_bsearch span_bound_distance span_const_to_span Span_joinsel span_joinsel span_joinsel_default span_joinsel_hist span_joinsel_hist1 span_joinsel_oper span_joinsel_scalar span_position Span_sel span_sel span_sel_contained span_sel_contains span_sel_default span_sel_hist span_sel_hist1 span_sel_overlaps span_sel_scalar time_oper_sel value_oper_sel

span_joinsel_oper() static Selectivity span_joinsel_oper ( SpanBound *  lower1, SpanBound *  upper1, int  nhist1, SpanBound *  lower2, SpanBound *  upper2, int  nhist2, Datum *  length, int  length_nvalues, meosOper  oper  ) static Look up the fraction of values in the first histogram that satisfy an operator with respect to a value in the second histogram.